Classic Dirt Bike — Autumn 2017

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ctedtheir

m y estostillbeinuse 50 ormore

yearsaftertheirmanufacture,astheywere

inthemarketofsellingnewbikeseach

year,sohopefullytheoldoneswouldbe

tradedin.However,thefactis,thanksto

theclassicsceneingeneralandthePre-65

compsceneinparticular,bikessuchas

BSA’sB40modelhaveanextendedlifeand

thingswear,especiallyif there’sarider’s

bootinvolvedintheirworkinglife.Soit is

notanunreasonablethingtoexpectthe

splinesonagearchangeshafttobeless

thanpristineaftersuchapassageoftime.

BurtonBikeBitshaveahandyrepairshaft

availabletoreplacethesplinedpartwhich

doeswearratherthanthewholegearchange

quadrantwhichdoesn’twearallthatmuch.

Theoldshaftneedsremovingandthenew

oneisweldedinplace,jobdone.Theshaft

issuitableforanumberofBSAmodelsand

somesmallerTr iumphstooaccordingtothe

listontheirwebsite.

WHATISIT?

It is areplacementshaftfor the gearchange

quadranton all mannerof BSA unit singles

and twins.

WHAT’S IT COST?

It’ll set you back£13.16includingVATbut

therewill be post and packingto add.

WHEREDO YOUGET IT?

Burton BikeBits http://www.britishbikebits.com

or http://www.burtonbikebits.net

Tel: 01530 564362

Dirtproducts

It’sdoubtfulBSAeverexpectedthei

motorcyclestostill

It doesn’tmatterwhatmakeyourbikeis,

withoutsparkit’sanornament.Oneofthe

problemsfacingownersofmoremodern

twinshockandevomachinerynowcomingin

totheclassicsceneistheignitionscontain

componentswhicharenotownerserviceable

inthewayolderignitionswere.Onceyouadd

inthatoftensuchignitionpartsareprobably

obsoletenow,thenit startstogetinteresting.

Luckilyforownersof‘B’and‘C’modelsof

Yamaha’sDT360/400,Rex’sSpeedshopcan

helpsolveyourignitionwoeswiththeirPulser-

lessCDi/pick-uprepairkit.Thesemodels

haveablackplasticpick-upthatisnolonger

obtainableadditionally,neitherthepick-upor

theCDiwereagooddesigntostartwith,both

areknowntocauseproblemsandit’sdifficult

totell whatiscausingtheproblem.

Rex’spulser-lessCDiunitdoesawaywith

thistroublesomepick-up.Nootherchanges

tothechargingorelectricalsystemare

needed,eventheHTcoilsstaysthesame!

Downside?Thebackplateofthegenerator

needstheadjustmentslotselongatingwhich

meanssettingthetimingwithastrobelamp,

butotherwisethisisanextremelyneat

solution.

WHATISIT?

It is apulser-lessCDi unit for DT360/400

Yamahatwo-strokes.

WHAT’S IT COST?

The exportkit is £99.95but if you want

themto do the machiningthere’ll be a£40

plus VATchargeas well.

WHEREDO YOUGET IT?

From MarcusRex at Rex’sSpeedshop

rexs-speedshop.comTel: 01580880 768

LatemodelBultacoSherpasha

complicatedexhaustsystemwhic

inamassiveclub-likesteelsilencer

probablyanappreciableweightofthewhole

bike.Whennew,thesystemisniceandquiet

–afactorwhichledtothesemodelsoften

beingnicknamed‘whisperingwonders’when

theycameonthescene–butnearly 40

yearsonmostsilencersarejustasteelbox

withlittlepackingleftinside.Yes,theycanbe

repackedbutthatmeanscuttingthemopen

andweldingthemupagainafterallthecrud

hasbeencleanedout,neitherapleasantnor

easyjob.

Luckily,DaveRenhamatBultacoUK

hasbeenonthecasewithWESexhausts

andthey’vebeendevelopingacomplete

replacementsilencerinlightweight

aluminiumwithaneasyrepackfacilitybuiltin.

Mostpeoplewill,orshould,knowaproperly

packedexhaustiscriticalforthebest

performancefromatwo-strokesoanything

whichmakesit easierhasgottobegood.

BultacoUKtellustherearetwoversions–

thedifferenceisintheinlettubediameterso

makesureyouordertherightone.

WHATISIT?

It’sanaluminiumalloyrepackablesilencer

for 1976on BultacoSherpa models.

WHAT’S IT COST?

It costs£156includingVATbut plus post

and packing.

WHEREDO YOUGET IT?

It’savailablefrom In MotionBultacoUK

http://www.inmotiontrials.comTel: 01784 440033

Do youmake, import or otherwise supplybitsand pieces, clothing or oth

thingsthat theclassic andvintage off-road ridingcommunityuse?If

then your prodduuccttccooullddbe on thesepages.ContactHelen in adve

0011550077 529574 or editorrTimBritton on 01507529404.

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Products

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